Oscar e



(No Model.)

0. PERRIGO. ENGINE LATHE.

No. 499,929. Patented June- 20, 1.893.

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UNITED STATES PATENT OFFICE.

OSCAR E. PERRIGO, OF "NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE NEW HAVEN MANUFACTURING COMPANY, or SAME PLACE.

ENGINE-LATHE.

SPECIFICATION forming part of Letters Patent No. 499,929, dated June 20, 1893.

Application filed geptember 19, 1892. Serial No. 4%,255. (No model.)

To all whom it may concern. The said cam slotis shaped so that, according Be it known that I, OSCAR E. PERRIGO, of to the direction in which the cam is turned, New Haven, in the county of New Haven and it will operate to throw or swing the yoke in State of Connecticut,have invented a new Inione direction or the other, whereby the gear 5 provement in Engine-Lathes, (Case 13;) and I A is intermeshed with the gear 0, while the do hereby declare the following, when takenin gear A, is cut out, or vice-versa, and whereconnection with accompanying drawings and by the stud B, is reversed in the direction the letters of reference marked thereon, to be of its rotation, the said stud carrying a gear a full, clear, and exact description of the same, B, fixed to it, corresponding exactly in size to IO and which said drawings constitute part of the gear 0, and constantly meshed into by the this specification, and represent, in gear A. The cam slot G, before mentioned, Figure 1, a broken view in side elevation of extends in opposite directions from its center, a lathe constructed in accordance with my and may be said to be composed of two ininvention; Fig. 2, a broken end view thereof; clined portions g g, and two rests g g, located 5 5 15 Fig. 3, a view in the nature of a diagram at the ends of the said inclines respectively, showing the development of the cam and the and an intermediate rest g located between slot therein. the same. The said rests of the cam are My invention relates to an improvement in straight, and co-operate with the pin of the engine-lathes, the objectbeing to produce simyoke in looking the yoke at the limits of its 10 2o ple and effective means for reversing the rothrow, and also in its intermediate position, tation of the stud by means of which power in which both of its gears are disengaged is transmitted to the feed-rod. from the spindle gear 0. It will be observed With these ends in view, myinvention conthat the cam G is made independent of and sists in an engine lathe having certain details applied to the operating-shaft H, than which '2 5 of construction and combinations of parts as it is considerablylarger in-diameter. By this will be hereinafter describedand pointed out construction I avoid weakening the shaft by in the claim. cutting into it, and am unhampered in giving In carrying out my invention, 1 fulcrum a the slot the right throw for securing the best yoke A, upon the shaft or arbor B, of the results.

o lathe,which is ordinarily known as the stud, My improved reversing mechanism above the said yoke standing vertically above the described may be used in connection with any saidstud on whiehithas but limited swingof the ordinary gears for operating the feeding movement. The said yoke carries at its rod and feed-screw of the lathe, and as such upper end, which is wider than its lower end, gears are well known, it has not seemed nec- 3 5 two gearsA and A differentiated in size, but essary to me to show my invention in connecmeshinginto each other, and bothbeingadapttion with any'of them. I ed to mesh, though not at the same time, into I am aware that it is old to provide a lathe the spindle gear 0, which is of usual construcwith an operating-shaft adapted .to be turned tion, as are also the back gears D and D, and by hand, and having a cam-slot receiving a 9:)

40 the cone E. The said spindle-gear 0, forms pin mounted in a yoke hung on the studof so far as the gears A, A and 13, shown herethe lathe, and carrying two gears meshing in, are concerned, the driving gear, and while with each other, one of the said gears also I shall probably so employ it, I do not limit meshing into a gear fixed to the stud and my invention to it, as some other gear might both of them being alternately engaged with 5 5 be used to take its place. The yoke is also the driving-gear according to the position of provided with an inwardly projecting pin F, the yoke which is shifted for the engagement which enters a cam slot G, partially encirof the gears carried by it. with the said drivcling the periphery of a cam G, mounted on ing-gear, through the medium of the said a horizontal operating-shaft H, which is f urshaft, cam-slot and pin. I do not, therefore, no

50 nished at one end with an operating-lever I, claim that construction broadly, but only m y as plainly shown in Fig. 1 of the drawings. particular construction.

and extendingiabove the :samerandtcarrying Having fully described my invention,w,hat I claim asmew, and desireto securekbylettersfi Patent, is- 1 In an engine-lathe, the combination with the stud thereof, and a gear mounted thereupon, of a yoke swung on vthe said stud,

a pin, and twogears meshingiintoVeach other,i one of the said gears also meshing into the gear fixed to the said stud; a drivingrgeartlocated above the said yoke, in position' to be. intermeshed with one of the gears thereof, ac-; cording to the position of the yoke; an oper ating-shat't adaptedto be =operated by' handfi and a cam made independentmf:endfeppliedi IGEO. ll, SEYMOUR. 

